X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=Name.xs;h=9a4d4939872749b2d634a019a76b5dd8d16dd361;hb=lexical;hp=348408505ec956f354711afb5c94493f13747bfe;hpb=d691461d21d8d434fc936c361a48664f265b0d1e;p=p5sagit%2FSub-Name.git

diff --git a/Name.xs b/Name.xs
index 3484085..9a4d493 100644
--- a/Name.xs
+++ b/Name.xs
@@ -63,13 +63,13 @@ subname(name, sub)
 		croak("Not a subroutine reference");
 
 	for (s = nameptr; s <= nameptr + namelen; s++) {
-		if (*s == ':' && s[-1] == ':') {
+		if (s > nameptr && *s == ':' && s[-1] == ':') {
 			end = s - 1;
 			begin = ++s;
 			if (seen_quote)
 				need_subst++;
 		}
-		else if (*s && s[-1] == '\'') {
+		else if (s > nameptr && *s != '\0' && s[-1] == '\'') {
 			end = s - 1;
 			begin = s;
 			if (seen_quote++)